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Old 11-01-2004, 04:13 PM
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PPG epoxy patch question (help asap pleaaaase!!)

I painted my car with the ppg epoxy primer (DP74LF with DP402LF catalyst) to get it protected. Then I sanded a few spots (5 or 6) down to the metal and used filler. I'd like sand those spots in with a sandable primer but they are over bare metal. I am out of the epoxy primer so I can't just patch with that.

Do I go buy more of the same stuff (non-sandable) and just try to sand it in or what?

HELP!! I wanna get this car painted soon but this is my first job so I am kinda clueless and just want to do it right..

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Old 11-01-2004, 04:14 PM
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Buy more Epoxy primer.......................
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Old 11-01-2004, 04:16 PM
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thanks for the quick reply - then just sand it in and paint my final paint over that? Or do I need to do some sandable primer TOO?

I got some pinholes in the filler I just can't seem to get rid of, not sure if the epoxy primer will do the job or not?
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Old 11-01-2004, 04:18 PM
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You are going to need a few coats of sandable primer, most of which you will sand off. This smooths out the body, scratches, pinholes etc.

90% of a good paint job is the preparation, don't cheap out now.
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Old 11-01-2004, 04:27 PM
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ok so patch w/epoxy the spray the ENTIRE car w/sandable primer? What kind?

It's bare metal under the epoxy.

My local paint shop sucks for help..

color coat is an omni single stage..

I got tons of that, can I just spray over the epoxy then sand n buff or sandable primer?
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Old 11-01-2004, 04:28 PM
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I'm no expert either...........depends on what you are going to paint with...........one of the body and paint guys here will probably see this and answer.

Omni................any good sandable primer should work with that, but let the experts have a say first
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Old 11-01-2004, 04:31 PM
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Final coat is Omni TV MTV (MTV2478 B Red) with Omni LV hardener and "Grow automotive" 1370 medium urethene reducer.

This is my FIRST job, but I got 5 vehicles all needing paint so I am learning as I go. This one is my wifes car though so it is pretty important
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Old 11-01-2004, 08:13 PM
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Brandon,
i think Ponch has you on right track.
bare spots hit again with epoxy.
Get a 2K primer and only spray over the areas that have body work or imperfections to fill.
Your single stage paint can be sprayed over the epoxy or 2K primer.
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Old 11-01-2004, 09:27 PM
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1. Recoat the repaired areas with epoxy.
2. Lightly sand whole car with 400 paper ( since you have been working on it for a while, you are outside the recoat window on the epoxy primer and it needs to have the surface roughened)
3. Spray whole thing with 2K high build primer (/surfacer/sealer - depending on what it may be called)
4. Block sand with 400 to achieve a perfect surface to apply your top coat.
5. Apply top coat
6. Stand back and admire your good work.

Omni 182 - hi build 2k primer
Omni 170 - epoxy primer
a bit less expensive than the regular PPG Deltron

DPxxLF - epoxy primer
K-38 hi build 2k primer
Deltron - the top quality stuff

If you are using Omni top coats, I'd use the Omni primers as well.
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Old 11-01-2004, 10:14 PM
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well I got some transtar 2 n 1 stuff in a rattle can. It fills amazingly well for a rattle can! I guess your supposed to spray within a week of applying the epoxy primer so they suggested re-applying the epoxy primer and then after a couple hours shooting the finall SS. So that's what I am gonna do - possibly this weekend..

So basically I guess I am kinda doing the opposite of what your suggesting but it will be encapsulated (for lack of a better word) in the PPG epoxy primer so I think it will be good. I am going to take a different route on my next paint job but I do really need to get something on this car so I can get it out of the garage and on the road!

I figure if I an not happy I can always sand it down for another coat of SS.

Quote:
Originally posted by julmer
1. Recoat the repaired areas with epoxy.
2. Lightly sand whole car with 400 paper ( since you have been working on it for a while, you are outside the recoat window on the epoxy primer and it needs to have the surface roughened)
3. Spray whole thing with 2K high build primer (/surfacer/sealer - depending on what it may be called)
4. Block sand with 400 to achieve a perfect surface to apply your top coat.
5. Apply top coat
6. Stand back and admire your good work.

Omni 182 - hi build 2k primer
Omni 170 - epoxy primer
a bit less expensive than the regular PPG Deltron

DPxxLF - epoxy primer
K-38 hi build 2k primer
Deltron - the top quality stuff

If you are using Omni top coats, I'd use the Omni primers as well.
well now I kinda wish I went this route, suppose I still can..

The guy really thought I should re-apply the epoxy though, rather than put on a 2k - he thought it might be prone to peeling. Who knows, not me that's for sure!

as for the omni/ppg now I wish I did do the omni primer stuff but I intended to go full PPG, till I saw the price tag. Not that I mind paying that for paint, just not on my first paint job where there is a good chance I'll do something stupid

I kinda figured down the road it has a good base, all the body work is done, and I can just rough up the omni and put a BC/CC over it.. maybe?

BTW here is the car:

http://rivercityrockcrawlers.com/web.../gallery/Oscar



Check out the link above to pictures, it's been a long trip for my first dabble in body work, but I have three others here that need to be completely redone including a nice 57 chevy and a 63 international (the bug is a 73). The bug had a lot of rust, so I completely sandblasted it and patched a bunch of spots - all in all I am real happy so far and I just can't wait to get the final paint on!

I am having fun with body work, I have never been a "detail" guy so this is real good experience..

Last edited by BrandonMiller; 11-01-2004 at 10:14 PM.
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